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|
{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Add where
import Common.Annex
import Annex.Exception
import Command
import qualified Annex
import qualified Annex.Queue
import qualified Backend
import Logs.Location
import Annex.Content
import Utility.Touch
import Backend
command :: [Command]
command = [Command "add" paramPaths defaultChecks seek "add files to annex"]
{- Add acts on both files not checked into git yet, and unlocked files. -}
seek :: [CommandSeek]
seek = [withFilesNotInGit start, withFilesUnlocked start]
{- The add subcommand annexes a file, storing it in a backend, and then
- moving it into the annex directory and setting up the symlink pointing
- to its content. -}
start :: BackendFile -> CommandStart
start p@(_, file) = notAnnexed file $ do
s <- liftIO $ getSymbolicLinkStatus file
if isSymbolicLink s || not (isRegularFile s)
then stop
else do
showStart "add" file
next $ perform p
perform :: BackendFile -> CommandPerform
perform (backend, file) = do
k <- Backend.genKey file backend
case k of
Nothing -> stop
Just (key, _) -> do
handle (undo file key) $ moveAnnex key file
next $ cleanup file key True
{- On error, put the file back so it doesn't seem to have vanished.
- This can be called before or after the symlink is in place. -}
undo :: FilePath -> Key -> IOException -> Annex a
undo file key e = do
unlessM (inAnnex key) rethrow -- no cleanup to do
liftIO $ whenM (doesFileExist file) $ removeFile file
handle tryharder $ fromAnnex key file
logStatus key InfoMissing
rethrow
where
rethrow = throw e
-- fromAnnex could fail if the file ownership is weird
tryharder :: IOException -> Annex ()
tryharder _ = do
g <- gitRepo
liftIO $ renameFile (gitAnnexLocation g key) file
cleanup :: FilePath -> Key -> Bool -> CommandCleanup
cleanup file key hascontent = do
handle (undo file key) $ do
link <- calcGitLink file key
liftIO $ createSymbolicLink link file
when hascontent $ do
logStatus key InfoPresent
-- touch the symlink to have the same mtime as the
-- file it points to
s <- liftIO $ getFileStatus file
let mtime = modificationTime s
liftIO $ touch file (TimeSpec mtime) False
force <- Annex.getState Annex.force
if force
then Annex.Queue.add "add" [Param "-f", Param "--"] [file]
else Annex.Queue.add "add" [Param "--"] [file]
return True
|
